基于正交试验的抽油机工作效率影响因素分析

Influencing Factors Simulation Analysis of Rodless Pumping Unit's Efficiency Based on the Orthogonal Test

水基动力无杆抽油机是近几年来发展的一项新型无杆液压采油装置,但由于应用时间短,技术不成熟,存在产油效率低下的问题。为了提高该新系统的工作效率,构建了水基动力无杆抽油机运动关键部位——动力缸的动力学模型,建立了动力缸的运动方程。基于正交试验对运动方程的模拟计算结果进行直观分析和方差分析,得出对水基动力无杆抽油机工作效率影响因素从大到小依次为动力液流速、动力液压力、配重质量,并且当动力液流速为2.252 m/s、动力液压力为9.6 MPa、配重质量为430 kg时工作效率最高。该项研究结果可为实际生产提供理论依据。

Water base power rodless pumping unit is a new type of hydraulic oil recovery equipment in recent years, which uses water as its power liquid and applies the hydraulic principle to oil recovery. Because of short ap- plication time and immaturity of this technology, the efficiency to produce oil is quite low. In order to improve the working efficiency of this new system, a theoretical analysis of water base power rodless pumping unit is needed to build a kinetic model for power cylinder that is the key part of the machine to get the motion equations. Based on the orthogonal test, direct analysis and variance analysis on the simulated result should be carried out so as to figure out the significance that pumping unitg technological parameters have on its working efficiency. The order of influencing factors from big to small is： hydraulic velocity, hydraulic pressure and balance weight quality. When the hydraulic velocity is 2. 252 m/s, the hydraulic pressure is 9.6 MPa and the balance weight quality is 430 kg, the highest effi- ciency can be obtained. The analysis result will be of great guidance for practical production.